John Carlo Mastrangelo

John Carlo Mastrangelo

recognized lawyers icon Recognized in Ones to Watch since 2024
Awarded Practice Areas
Administrative and Public Law Corporate and Commercial Litigation
Works at
Lax O'Sullivan Lisus Gottlieb LLP

13 Best Lawyers awards

Lax O'Sullivan Lisus Gottlieb LLP logo

Biography

A methodical litigator who delivers innovative and pragmatic solutions, John Carlo has a broad litigation practice with a particular focus in corporate commercial litigation and public law. He has significant subject matter experience in multiple industries including telecommunications, energy, and real estate.

John Carlo has played pivotal roles in numerous significant litigation matters including a precedent-setting CRTC appeal, a First Nations historic Treaty claim, and the largest contested merger in Canadian history. He has appeared at all levels of court in Ontario before the national Competition Tribunal, and the Supreme Court of Canada.

John Carlo graduated as the gold medallist from the Osgoode Hall Law School and won a range of subject-matter prizes. Before joining Lax O’Sullivan Lisus Gottlieb, John Carlo served as a law clerk to the Honourable Suzanne Côté at the Supreme Court of Canada.

Works at
Lax O'Sullivan Lisus Gottlieb LLP

13 Best Lawyers awards

Lax O'Sullivan Lisus Gottlieb LLP logo

Locations

Education

  • Osgoode Hall Law School, York University, J.D., graduated 2017

Bar Admissions

  • Ontario, 2018

Client Testimonials

Awards & Focus

Recognized in Best Lawyers: Ones to Watch in Canada™ 2027 for work in:
  • Administrative and Public Law
  • Corporate and Commercial Litigation

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